He also studied piano with Kathleen McGrath, flute with Vivienne Leigh, harpsichord with Robert Elliott of the Alfred Deller Consort, and choir-training with John Bertalot.
On returning to the UK, Stewart was Director of Music at the Parish Church of St Mary the Virgin, Bowdon for four years.
[5] He regularly tours abroad as an organ recitalist, most recently in Denmark at the cathedrals of Aarhus and Copenhagen in Summer 2015.
Stewart was awarded the British Empire Medal (BEM) in the 2023 Birthday Honours for services to music.
[8] Various composers have written music for him, including: Text from Psalm 139, set for baritone solo, seven-part men's voices and organ.